| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 01/20/1987 | US4638341 Gated transmission line model structure for characterization of field-effect transistors |
| 01/20/1987 | US4638248 Methods and apparatus for measuring relative gain and phase of voltage input signals versus voltage output signals |
| 01/20/1987 | US4638245 Detection of ground faults in ungrounded DC power supply systems |
| 01/20/1987 | US4638244 Ground connection monitor |
| 01/20/1987 | US4638242 Method and device for measuring insulation deterioration of electric line |
| 01/13/1987 | US4636717 Vector network analyzer with integral processor |
| 01/13/1987 | US4636715 Digital display ohmmeter |
| 01/13/1987 | US4636714 Capacitive transducer and method |
| 01/13/1987 | US4636658 Voltage detecting device |
| 01/08/1987 | DE3522775A1 Device for determining the contact resistance on the slider of a potentiometer |
| 01/07/1987 | EP0207860A2 Method and device for the rapid reflectometric testing of passive components in the VHF range |
| 01/07/1987 | EP0207377A1 Measuring system for dielectric spectroscopy |
| 01/06/1987 | US4634982 Capacitive measuring element for oscillometric measurement of conductance of streaming solutions and method of determining the dimensions thereof |
| 01/06/1987 | US4634965 Charge balancing detection circuit |
| 01/06/1987 | US4634964 Instruments and systems for measuring cable capacitances |
| 01/06/1987 | US4634963 Method and apparatus for the testing of dielectric materials |
| 01/06/1987 | US4634962 Phase noise analyzer |
| 12/30/1986 | US4633168 Measuring system for determining the reactance ratio of a pair of reactive devices |
| 12/30/1986 | EP0206440A2 Apparatus for measuring the electrical conductivity of a subject |
| 12/30/1986 | EP0205599A1 Soil moisture monitor |
| 12/30/1986 | EP0205592A1 Charge balancing detection circuit |
| 12/30/1986 | EP0052128B1 Apparatus and method for image reproduction of materials using their magnetic and electric properties |
| 12/30/1986 | CA1216042A1 Flaw detection method using microwaves |
| 12/24/1986 | CN86103182A Method and ohmmeter for measuring very low electric resistances |
| 12/17/1986 | EP0070301B1 Reactance measurement circuit |
| 12/16/1986 | US4629977 Method and apparatus for measuring the resonant frequency of a high Q resonator |
| 12/10/1986 | EP0199979A2 Measuring method for determining the loop or internal resistance of an alternating current network and apparatus for using the method |
| 12/10/1986 | CN85104755A Method and apparatus for testing compatibility of enamelled wire with macerated lacquer |
| 12/09/1986 | US4628144 Method for contact resistivity measurements on photovoltaic cells and cell adapted for such measurement |
| 12/04/1986 | WO1986007155A1 Two body capacitance measurement instrument remotely connected to probe via transmission channel |
| 12/03/1986 | EP0203455A1 Subscriber line monitoring circuit |
| 12/02/1986 | US4626785 Focused very high frequency induction logging |
| 12/02/1986 | US4626773 Method and means for determining rock properties using time-domain dielectric spectroscopy |
| 11/25/1986 | US4625332 Programmable time varying attenuator |
| 11/20/1986 | WO1986006842A1 Bridge for absolute measurement of the capacity and conductance of semi-conductor test-pieces |
| 11/20/1986 | EP0202061A1 Test machinery |
| 11/20/1986 | EP0202003A2 Method and apparatus for measuring delay and/or gain difference |
| 11/12/1986 | EP0201205A1 Apparatus and methods for semiconductor wafer testing |
| 11/12/1986 | CA1213940A1 Digital display ohmmeter |
| 11/04/1986 | US4621228 Electric moisture meter |
| 11/04/1986 | US4621227 Measuring system for determining the capacitance ratio of a pair of capacitors |
| 11/04/1986 | US4621226 Apparatus and method for determining an input electrical characteristic of a device under test |
| 10/28/1986 | CA1213324A1 Test contact resistance of dry circuit contacts |
| 10/23/1986 | WO1986006230A1 Apparatus for analysing two-channel transmission/reflection characteristics |
| 10/23/1986 | WO1986006175A1 Display for reflection characteristics of complex transmission |
| 10/22/1986 | CN85205806U Portable digit micro-ohm meter |
| 10/21/1986 | US4618818 Evaluation circuits for passive measurement-variable pickups |
| 10/14/1986 | US4617512 Capacitance measuring device including an overrange circuit |
| 10/08/1986 | EP0196912A1 Capacitance bridge |
| 10/08/1986 | EP0196735A2 Differential capacitance detector |
| 10/01/1986 | EP0196158A1 Apparatus and methods for resistivity testing |
| 10/01/1986 | EP0131024B1 Capacitance measuring circuit |
| 10/01/1986 | CN85105240A Method and device for measuring the resistance of conductive gum or conductive plastic |
| 09/17/1986 | EP0194471A2 Constant current power supply system with redundancy for resistance temperature detector |
| 09/17/1986 | CN86200939U Double bridge on-line resistance meter |
| 09/03/1986 | EP0192708A1 Nmr tuning procedure. |
| 09/02/1986 | CA1210814A1 Apparatus for detecting ground fault in variable- voltage variable-frequency power system |
| 08/27/1986 | EP0192416A2 A sensor for detecting an amount of rain |
| 08/27/1986 | EP0191996A1 Resistivity surveying apparatus |
| 08/27/1986 | EP0191899A2 Sensor for measuring electrical properties in an electric field |
| 08/20/1986 | EP0191046A1 Circuit for continuously controlling the grounding resistance of electric apparatuses. |
| 08/20/1986 | EP0096033B1 Insulation analyzer apparatus and method of use |
| 08/19/1986 | US4607216 Apparatus for measurement by digital spectrum analyzer |
| 08/19/1986 | US4607212 Method and apparatus for detection of knots or the like in sawn lumber |
| 08/13/1986 | CN85205267U Integrated protector for lighting and signal in 127v for under coal mine |
| 08/12/1986 | US4605893 Contactless measurement of electrical properties of wafer shaped materials |
| 08/12/1986 | US4604899 Semiconductor-type pressure transducer |
| 08/06/1986 | CN85204120U Point measuring instrument using voltage-current characteristic of non-linear resistor with small current |
| 08/05/1986 | US4604571 Circuit for the determination of voltage extrema |
| 08/05/1986 | US4603581 For sensing existance of a substance |
| 08/05/1986 | CA1208931A1 Measuring and linearizing circuit device for a capacitive primary element |
| 07/30/1986 | CN85109527A 差动式电容检测器 Differential capacitance detector |
| 07/29/1986 | CA1208698A1 Reactance measurement circuit with enhanced linearity |
| 07/22/1986 | US4602322 Transistor rectifier |
| 07/17/1986 | WO1986004151A1 Soil moisture monitor |
| 07/17/1986 | WO1986004150A1 Charge balancing detection circuit |
| 07/15/1986 | US4600878 Apparatus for testing electrical microprinted circuits utilizing ionizing gas for providing electrical connections |
| 07/15/1986 | CA1207848A1 Ac parametric circuit |
| 07/09/1986 | CN85100333A Resistance box for measuring temperature |
| 07/08/1986 | EP0151575A4 Reactance measurement circuit with enhanced linearity. |
| 07/02/1986 | EP0186635A1 A method of measuring impedances, particularly low capacitances, by using one or more references |
| 06/24/1986 | US4596965 Method of and apparatus for determining amplitude ratios and phase differences of signals of the same frequency |
| 06/11/1986 | EP0183996A2 Apparatus for measuring an AC electrical parameter of a device |
| 06/11/1986 | CN85202256U Direct reading transformer condenser bridge |
| 06/10/1986 | US4594542 Solid state, high-low resistance monitor |
| 06/03/1986 | US4593246 NMR tuning procedure |
| 06/03/1986 | US4592818 Cathodic protection system |
| 05/20/1986 | US4590421 Measuring attachment connectible to a multimeter for measuring earth resistances |
| 05/13/1986 | US4589073 Apparatus for determining prospective short circuit current |
| 05/13/1986 | US4589048 Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
| 05/13/1986 | US4588970 Three section termination for an R.F. triaxial directional bridge |
| 05/13/1986 | US4588953 Microwave piston position location |
| 05/07/1986 | EP0180277A1 Nondestructive testing of multilayers ceramic capacitors |
| 05/06/1986 | CA1204160A1 Method and apparatus for measuring the surface transfer impedance of a piece of shielded cable |
| 04/29/1986 | US4585990 For monitoring a voltage signal to detect transient voltages |
| 04/22/1986 | US4584650 Method and apparatus for determining and directly measuring the voltage standing wave ratio of an RF transmission system |
| 04/22/1986 | US4584522 Digital direct reading grain moisture tester |
| 04/15/1986 | US4583233 Method of monitoring suitability of a transmission path for transmission of digital data signals, and apparatus for use in carrying out the method |
| 04/09/1986 | EP0176889A2 Method of measuring orientation or dielectric characteristic of dielectric sheets or webs |
| 04/08/1986 | US4581639 Method and apparatus for monitoring suitability of a transmission path for transmission of digital data signals |